Nut-lock



No. 748,588. PATENTED JAN, 5,' 1904.

S. G. GROW.'

NUT LOCK.

APPLIOATION FILED MAY 2, 1903.

no menu.

NITED STATES IPatented J'anuar'y' 1904.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 748,588, dated January 5, 1904;.

Application filed May 2, 1903. Serial No. 155,387. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL O. CROW, a citizen of the United States, residing at South Sharon, in the county of Mercer and State of Pennsylvania,have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to nut-locks, more particularly to that class employing a superimposed nut; and the primary object thereof is to provide a device of this character which will be cheap, durable, and easy of manipulation and which will greatly facilitate the locking of a nut upon a bolt.

Further objects of the invention will appear as the nature of the same is more fully understood from the following description and accompanying drawings.

The invention consists in the construction, combination, and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is a plan view of a bolt equipped with a nut-lock constructed in accordance with my invention. Fig. 2 is a plan view of the bolt. Fig. 3 is a side elevation and plan view of the locking-washer. Fig. 4 is a plan view of the primary nut. Fig. 5 is a side elevation and plan view of the superimposed nut.

Referring to the drawings by reference-numerals, 1 1 designate two members clamped together by a nut-lock of my improved construction, and 2 a bolt having the portion 3 thereof provided with right-hand threads and a reduced portion 4, provided with left-hand threads.

5 designates the primary nut of any construction, the same being adapted to be applied to the threaded portion 3 of the bolt and having one face thereof provided with a longitudinally-arranged groove 6.

7 designates a washer adapted to be applied to the bolt and interposed between the nut 5 and one of the members 1 and is provided with a right-angularly-extending resilient key 8, which may be formed integraltherewith or made separately and secured thereto. This key is adapted to lie in the groove 6 to prevent any movement of the washer, whereby the same may securely lock the superimposed nut against casual displacement, which in turn locks the primary nut in applied position. The outer end of the key is beveled and projects beyond the nut 5 in order that it may engage the superimposed nut.

9 designates the superimposed nut, which is adapted to be received by the portion 4 and be screwed down against the nut 5, the same holding the nut 5 against casual displacement through virtue of the opposite threading of the portions 3 and 4E. Thisbolt has the lower edge thereof provided with a horizontally-disposed ratchet-flange 10, the same being adapted to be engaged by the beveled end of the key S, which permits the turning of the nut 9 to approach the nut 5, but prevents the same from being reversely turned. The resiliency of the key and the beveled end thereof permits and facilitates the turning of the nut 9 to approach the nut 5 and also causes the beveled end to alternately engage the ratchets of the flange 10 to hold the nut 9 against a reverse movement.

To remove the nut 9, it is necessary to force the key from in contact with the flange 10, which may be readily accomplished through virtue of the keys resiliency, after which the nut 5 and washer 7 may be removed.

Having thus fully described the invention, what is claimed as new is- 1. In a device of the character described, the combination with a member, of a bolt, a nut provided with a longitudinal groove, a washer interposed between said member and nut and provided with a right-angularly-extending resilient key having a beveled end, said key being adapted to fit in the groove and extend above the nut, and a nut superimposed upon said bolt and providedwith a horizontally-disposed ratchet-flange adapted to be engaged by the beveled end of the key.

2. In a device of the character described, the combination with a member, of a bolt provided withright and left hand threads, a nut provided with a longitudinal groove and adapted to fit on the right-hand threaded portion of said bolt, a washer interposed between said member and nut and provided with a right-angularly-extending resilient key having a beveled end, said key being adapted to fit in the groove and extend above the nut,

and a nut fitted upon the left-hand threaded In testimony whereof I affix my signature portion of said bolt to hold the first-mentioned in presence of two witnesses.

nut in applied position, said nut being.pro-

vided with a horizontally-disposed ratchet- SAMUEL CROW 5 flange adapted to be engaged by the beveled Witnesses:

end of the key to hold said nut in applied po- JOHN FITZPATRIOK,

sition. EDWIN S. BARTLETT. 

